<table class="table table-hover">
    <tr>
        <td>
            <a href="{{url_for('user',username=post.author.username)}}"></a>
        </td>
        <td>
            <a href="{{url_for('user',username=post.author.username)}}">{{post.author.username}}</a>
            says:
            <br>
            {{post.content}}
        </td>
    </tr>
</table>